ECRIS2020 - List of Keywords (injection)

Paper	Title	Other Keywords	Page
MOZZO04	New Metallic Stable Ion Beams for GANIL	ECR, ion-source, plasma, experiment	54
	F. Lemagnen, C. Barue, M. Dubois, R. Frigot, N. Lechartier, V. Metayer, B. Osmond GANIL, Caen, France
	GANIL has been producing many stable beams for nearly 40 years. Constant progress has been made in terms of intensity, stability and reliability. The intensity for some stable metallic beams now exceeds or approaches the pµA level at an energy up to 95 MeV/u: 1.14 pµA for 36S (65% enriched) at 77 MeV/u, 0.35 pµA for 58Ni (63%) at 74 MeV/u. The presentation highlights recent results obtained for 28Si, 184W and 130Te using the GANIL ‘s LCO (Large Capacity Oven) on the ECR4 ion source. To produce the tungsten beam, two injection methods were compared. For the first one, we evaporated some tungsten trioxide (WO3) with GANIL ‘s LCO. For the second one, the injection in the plasma chamber was made by using MIVOC (Metallic Ions from VOlatile compounds) with a tungsten hexacarbonyl (W(CO)6) compound. It was the first time that we used metal carbonyl compounds and the result is promising. All the tests have been qualified to obtain the level of intensity and beam stability. Theses good results led us to propose them for Physics experiments.
	Slides MOZZO04 [4.743 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-MOZZO04
About •	Received ※ 25 September 2020 — Revised ※ 16 December 2020 — Accepted ※ 21 January 2021 — Issue date ※ 18 May 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUYZO03	Electromagnetic Simulation of "plasma-shaped" Plasma Chamber for Innovative ECRIS	cavity, plasma, GUI, ECR	90
	G.S. Mauro, O. Leonardi, D. Mascali, A. Pidatella, F. Russo, G. Sorbello, G. Torrisi INFN/LNS, Catania, Italy A. Galatà, C.S. Gallo INFN/LNL, Legnaro (PD), Italy C.S. Gallo UNIFE, Ferrara, Italy G. Sorbello University of Catania, Catania, Italy
	The plasma chamber and injection system design play a fundamental role in ECRISs with the aim to obtain an optimized electromagnetic field configuration able to generate and sustain a plasma with a high energy content. In this work we present the numerical study and the design of an unconventionally-shaped cavity resonator* that possesses some key advantages with respect to the standard cylindrical cavities, usually adopted in ion sources setups. The cavity geometry, whose design has been completed on January 2020, has been inspired by the typical star-shaped ECR plasma, determined by the magnetic field structure. The chamber has been designed by using the commercial softwares CST and COMSOL, with the aim to maximize the on-axis electric field. Moreover, a radically innovative microwaves injection system, consisting in side-coupled slotted waveguides, has been implemented, allowing a better power coupling and a more symmetric power distribution inside the cavity with respect to the standard rectangular waveguides. This new ’plasma-shaped oriented’ design could relevantly improve the performances of the ECRISs while making more compact the overall setup. *This work has been carried out within the Grant 73/IRIS project, supported by INFN (Italian patent pending n. 102020000001756).
	Slides TUYZO03 [5.119 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-TUYZO03
About •	Received ※ 28 September 2020 — Revised ※ 05 October 2020 — Accepted ※ 18 May 2021 — Issue date ※ 10 December 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEXZO05	Production of Metal Ion Beams From ECR Ion Sources	cyclotron, ECR, ion-source, operation	137
	A.E. Bondarchenko, S.L. Bogomolov, N. Lebedev, V.N. Loginov, V. Mironov, D.K. Pugachev JINR, Dubna, Moscow Region, Russia M.B. Abdigaliyev, I.A. Ivanov, M.V. Koloberdin, A.E. Kurakhmedov, D.A. Mustafin, Y.K. Sambayev, M.V. Zdorovets INP NNC RK, Almaty, Kazakhstan
	The work describes the preparation of metal ion beams from ECR ion sources by the MIVOC (Metal Ions from Volatile Compounds) method. The method is based on the use of volatile metal compounds having high vapor pressure at room temperature: for example, Ni(C5H5)2, (CH3)5C5Ti(CH3)3 and several others. Using this method, intense beams of chromium, titanium, iron, and other ions were obtained at the U-400 FLNR JINR and DC-60 cyclotrons (Astana branch of the INP, Alma-Ata, Kazakhstan Republic).
	Slides WEXZO05 [3.129 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEXZO05
About •	Received ※ 24 September 2020 — Revised ※ 28 September 2020 — Accepted ※ 03 December 2020 — Issue date ※ 19 May 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEZZO02	Contaminants Reduction in ECR Charge Breeders by LNL LPSC GANIL Collaboration	plasma, vacuum, ECR, extraction	151
	J. Angot, M.A. Baylac, M. Migliore, P. Sole, T. Thuillier LPSC, Grenoble Cedex, France A. Galatà INFN/LNL, Legnaro (PD), Italy L. Maunoury GANIL, Caen, France
	Contaminants reduction in Electron Cyclotron Resonance Charge Breeders (ECRCB) is a key point for the future experiments foreseen at LNL and GANIL Isotope Separation On Line (ISOL) facilities. According to the mass separator resolution set downstream the ECRCB, the radioactive ion beam study can be challenged in case of low production rate. An ongoing collaboration between LNL, LPSC and GANIL laboratories aims to improve the beam purity, acting on all the pollutant causes. Comparative experiments will be done at LPSC using different techniques, like covering the plasma chamber wall with liners of different materials. Different configurations of the ECRCB will also be tested, with the enhancement of the efficiency and charge breeding time parameters as additional objectives. A presentation of this program is proposed together with the recent upgrade of the LPSC 1+N+ test bench, with the aim to improve the vacuum quality.
	Slides WEZZO02 [1.915 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEZZO02
About •	Received ※ 29 September 2020 — Revised ※ 01 October 2020 — Accepted ※ 15 October 2020 — Issue date ※ 04 November 2020
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

NACB01	Development of a Compact Linear ZAO NEG Pumping System	vacuum, operation, cathode, detector	167
	S.A. Kondrashev, E.N. Beebe, B.D. Coe, J. Ritter, T. Rodowicz, R. Schoepfer, S.M. Trabocchi BNL, Upton, New York, USA
	Funding: This work was supported by the US Department of Energy under contract number DE-SC0012704 and by the National Aeronautics and Space Administration. An upgrade of RHIC EBIS, the extended EBIS, is presently under development at Brookhaven National Laboratory to increase the intensity of the Au³²⁺ ion beams by 40%’50% to 2.1 ’ 10⁹ Au³²⁺ ions/pulse at the booster ring entrance. Generation of intense beams of polarized 3He²⁺ ions with up to ~ 5 ’ 1011 ions/pulse for the RHIC and the future electron’ion collider is a goal of the EBIS upgrade project as well. Ultra-high vacuum is extremely important for stable and reliable operation of EBIS/T devices. We have developed a linear pumping module based on the ZAO NEG unit commercially available from SAES Getters. This pumping system will be used for the Extended EBIS Upgrade which is presently under development at BNL. A ZAO NEG module has been modified to be heated up to 600 °C by passing up to 120 A of DC current through a stainless-steel cage for required NEG activation and reactivation temperature cycles. A method of pumping speed measurements using pulsed gas injection into the vacuum chamber has been developed and used for characterization of the ZAO NEG-based linear pumping system.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-NACB01
About •	Received ※ 29 September 2020 — Revised ※ 30 September 2020 — Accepted ※ 21 October 2020 — Issue date ※ 16 April 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

NACB04	Ion Simulations, Recent Upgrades and Tests with Titan’s Cooler Penning Trap	electron, plasma, simulation, extraction	181
	R. Silwal, J. Dilling, B.A. Kootte, A.A. Kwiatkowski, S.F. Paul TRIUMF, Vancouver, Canada J. Dilling UBC & TRIUMF, Vancouver, British Columbia, Canada G. Gwinner, B.A. Kootte University of Manitoba, Manitoba, Canada R. Simpson UW/Physics, Waterloo, Ontario, Canada
	TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN) facility has the only on-line mass measurement Penning trap (MPET) at a radioactive beam facility that uses an electron beam ion trap (EBIT) to enhance mass precision and resolution. EBITs can charge breed exotic isotopes, making them highly charged, thereby improving the precision of atomic mass measurement as the precision scales linearly with the charge state. However, ion bunches charge bred in the EBIT can have larger energy spread, which poses challenges for mass measurements. A cooler Penning trap (CPET) is currently being developed off-line at TITAN to sympathetically cool the highly charged ions (HCI) with a co-trapped electron plasma, prior to their transport to the MPET. To evaluate the integration of the CPET into the TITAN beamline and to optimize the beam transport, ion trajectory simulations were performed. Hardware upgrades motivated by these simulations and previous test measurements were applied to the off-line CPET setup. Ions and electrons were co-trapped for the first time with the CPET. Progress and challenges on the path towards HCI cooling and integration with the on-line beam facility are presented
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-NACB04
About •	Received ※ 17 October 2020 — Revised ※ 23 October 2020 — Accepted ※ 01 December 2020 — Issue date ※ 07 February 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOZZO04

New Metallic Stable Ion Beams for GANIL

ECR, ion-source, plasma, experiment

54

F. Lemagnen, C. Barue, M. Dubois, R. Frigot, N. Lechartier, V. Metayer, B. Osmond
GANIL, Caen, France

GANIL has been producing many stable beams for nearly 40 years. Constant progress has been made in terms of intensity, stability and reliability. The intensity for some stable metallic beams now exceeds or approaches the pµA level at an energy up to 95 MeV/u: 1.14 pµA for 36S (65% enriched) at 77 MeV/u, 0.35 pµA for 58Ni (63%) at 74 MeV/u. The presentation highlights recent results obtained for 28Si, 184W and 130Te using the GANIL ‘s LCO (Large Capacity Oven) on the ECR4 ion source. To produce the tungsten beam, two injection methods were compared. For the first one, we evaporated some tungsten trioxide (WO3) with GANIL ‘s LCO. For the second one, the injection in the plasma chamber was made by using MIVOC (Metallic Ions from VOlatile compounds) with a tungsten hexacarbonyl (W(CO)6) compound. It was the first time that we used metal carbonyl compounds and the result is promising. All the tests have been qualified to obtain the level of intensity and beam stability. Theses good results led us to propose them for Physics experiments.

Slides MOZZO04 [4.743 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-MOZZO04

About •

Received ※ 25 September 2020 — Revised ※ 16 December 2020 — Accepted ※ 21 January 2021 — Issue date ※ 18 May 2021

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUYZO03

Electromagnetic Simulation of "plasma-shaped" Plasma Chamber for Innovative ECRIS

cavity, plasma, GUI, ECR

90

G.S. Mauro, O. Leonardi, D. Mascali, A. Pidatella, F. Russo, G. Sorbello, G. Torrisi
INFN/LNS, Catania, Italy
A. Galatà, C.S. Gallo
INFN/LNL, Legnaro (PD), Italy
C.S. Gallo
UNIFE, Ferrara, Italy
G. Sorbello
University of Catania, Catania, Italy

The plasma chamber and injection system design play a fundamental role in ECRISs with the aim to obtain an optimized electromagnetic field configuration able to generate and sustain a plasma with a high energy content. In this work we present the numerical study and the design of an unconventionally-shaped cavity resonator* that possesses some key advantages with respect to the standard cylindrical cavities, usually adopted in ion sources setups. The cavity geometry, whose design has been completed on January 2020, has been inspired by the typical star-shaped ECR plasma, determined by the magnetic field structure. The chamber has been designed by using the commercial softwares CST and COMSOL, with the aim to maximize the on-axis electric field. Moreover, a radically innovative microwaves injection system, consisting in side-coupled slotted waveguides, has been implemented, allowing a better power coupling and a more symmetric power distribution inside the cavity with respect to the standard rectangular waveguides. This new ’plasma-shaped oriented’ design could relevantly improve the performances of the ECRISs while making more compact the overall setup.
*This work has been carried out within the Grant 73/IRIS project, supported by INFN (Italian patent pending n. 102020000001756).

Slides TUYZO03 [5.119 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-TUYZO03

About •

Received ※ 28 September 2020 — Revised ※ 05 October 2020 — Accepted ※ 18 May 2021 — Issue date ※ 10 December 2021

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEXZO05

Production of Metal Ion Beams From ECR Ion Sources

cyclotron, ECR, ion-source, operation

137

A.E. Bondarchenko, S.L. Bogomolov, N. Lebedev, V.N. Loginov, V. Mironov, D.K. Pugachev
JINR, Dubna, Moscow Region, Russia
M.B. Abdigaliyev, I.A. Ivanov, M.V. Koloberdin, A.E. Kurakhmedov, D.A. Mustafin, Y.K. Sambayev, M.V. Zdorovets
INP NNC RK, Almaty, Kazakhstan

The work describes the preparation of metal ion beams from ECR ion sources by the MIVOC (Metal Ions from Volatile Compounds) method. The method is based on the use of volatile metal compounds having high vapor pressure at room temperature: for example, Ni(C5H5)2, (CH3)5C5Ti(CH3)3 and several others. Using this method, intense beams of chromium, titanium, iron, and other ions were obtained at the U-400 FLNR JINR and DC-60 cyclotrons (Astana branch of the INP, Alma-Ata, Kazakhstan Republic).

Slides WEXZO05 [3.129 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEXZO05

About •

Received ※ 24 September 2020 — Revised ※ 28 September 2020 — Accepted ※ 03 December 2020 — Issue date ※ 19 May 2021

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEZZO02

Contaminants Reduction in ECR Charge Breeders by LNL LPSC GANIL Collaboration

plasma, vacuum, ECR, extraction

151

J. Angot, M.A. Baylac, M. Migliore, P. Sole, T. Thuillier
LPSC, Grenoble Cedex, France
A. Galatà
INFN/LNL, Legnaro (PD), Italy
L. Maunoury
GANIL, Caen, France

Contaminants reduction in Electron Cyclotron Resonance Charge Breeders (ECRCB) is a key point for the future experiments foreseen at LNL and GANIL Isotope Separation On Line (ISOL) facilities. According to the mass separator resolution set downstream the ECRCB, the radioactive ion beam study can be challenged in case of low production rate. An ongoing collaboration between LNL, LPSC and GANIL laboratories aims to improve the beam purity, acting on all the pollutant causes. Comparative experiments will be done at LPSC using different techniques, like covering the plasma chamber wall with liners of different materials. Different configurations of the ECRCB will also be tested, with the enhancement of the efficiency and charge breeding time parameters as additional objectives. A presentation of this program is proposed together with the recent upgrade of the LPSC 1+N+ test bench, with the aim to improve the vacuum quality.

Slides WEZZO02 [1.915 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEZZO02

About •

Received ※ 29 September 2020 — Revised ※ 01 October 2020 — Accepted ※ 15 October 2020 — Issue date ※ 04 November 2020

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

NACB01

Development of a Compact Linear ZAO NEG Pumping System

vacuum, operation, cathode, detector

167

S.A. Kondrashev, E.N. Beebe, B.D. Coe, J. Ritter, T. Rodowicz, R. Schoepfer, S.M. Trabocchi
BNL, Upton, New York, USA

Funding: This work was supported by the US Department of Energy under contract number DE-SC0012704 and by the National Aeronautics and Space Administration.
An upgrade of RHIC EBIS, the extended EBIS, is presently under development at Brookhaven National Laboratory to increase the intensity of the Au³²⁺ ion beams by 40%’50% to 2.1 ’ 10⁹ Au³²⁺ ions/pulse at the booster ring entrance. Generation of intense beams of polarized 3He²⁺ ions with up to ~ 5 ’ 1011 ions/pulse for the RHIC and the future electron’ion collider is a goal of the EBIS upgrade project as well. Ultra-high vacuum is extremely important for stable and reliable operation of EBIS/T devices. We have developed a linear pumping module based on the ZAO NEG unit commercially available from SAES Getters. This pumping system will be used for the Extended EBIS Upgrade which is presently under development at BNL. A ZAO NEG module has been modified to be heated up to 600 °C by passing up to 120 A of DC current through a stainless-steel cage for required NEG activation and reactivation temperature cycles. A method of pumping speed measurements using pulsed gas injection into the vacuum chamber has been developed and used for characterization of the ZAO NEG-based linear pumping system.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-NACB01

About •

Received ※ 29 September 2020 — Revised ※ 30 September 2020 — Accepted ※ 21 October 2020 — Issue date ※ 16 April 2021

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

NACB04

Ion Simulations, Recent Upgrades and Tests with Titan’s Cooler Penning Trap

electron, plasma, simulation, extraction

181

R. Silwal, J. Dilling, B.A. Kootte, A.A. Kwiatkowski, S.F. Paul
TRIUMF, Vancouver, Canada
J. Dilling
UBC & TRIUMF, Vancouver, British Columbia, Canada
G. Gwinner, B.A. Kootte
University of Manitoba, Manitoba, Canada
R. Simpson
UW/Physics, Waterloo, Ontario, Canada

TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN) facility has the only on-line mass measurement Penning trap (MPET) at a radioactive beam facility that uses an electron beam ion trap (EBIT) to enhance mass precision and resolution. EBITs can charge breed exotic isotopes, making them highly charged, thereby improving the precision of atomic mass measurement as the precision scales linearly with the charge state. However, ion bunches charge bred in the EBIT can have larger energy spread, which poses challenges for mass measurements. A cooler Penning trap (CPET) is currently being developed off-line at TITAN to sympathetically cool the highly charged ions (HCI) with a co-trapped electron plasma, prior to their transport to the MPET. To evaluate the integration of the CPET into the TITAN beamline and to optimize the beam transport, ion trajectory simulations were performed. Hardware upgrades motivated by these simulations and previous test measurements were applied to the off-line CPET setup. Ions and electrons were co-trapped for the first time with the CPET. Progress and challenges on the path towards HCI cooling and integration with the on-line beam facility are presented

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-NACB04

About •

Received ※ 17 October 2020 — Revised ※ 23 October 2020 — Accepted ※ 01 December 2020 — Issue date ※ 07 February 2021

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)